ARTIFICIAL LEATHER FOR AUTOMOBILE INTERIOR MATERIALS AND METHOD FOR PRODUCING THE SAME
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United States of America Patent
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Issued Date -
Sep 30, 2010
app pub date -
Mar 30, 2010
filing date -
Mar 31, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An artificial leather comprises a fibrous substrate having laminated on one side thereof an adhesive layer comprising a polyurethane resin formed by a moisture curing reaction of a urethane polyisocyanate prepolymer, a surface layer comprising a polyurethane resin formed by a reaction between a urethane polyol prepolymer and a urethane hardener, and a protective layer comprising a polyurethane resin, in this order. The urethane polyol prepolymer used in the formation of the surface layer is obtained by reacting a polyol containing polyether polyol, and a polyisocyanate, and weight proportion of the polyether polyol is 40% by weight or more based on the total weight of the urethane polyol prepolymer and the urethane hardener. The polyurethane resin constituting the surface layer has 100% modulus value of from 5 to 50 N/cm, and the surface layer has a degree of foaming of from 1.3 to 2.0 times.
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